Dye mixtures, process for their preparation and the use thereof

ABSTRACT

Dye mixtures, which comprise at least one dye of formula and at least one dye of formulae (2) and (3) wherein R1, R2, R3, R4 R5, R6 R7, X1, X2, A1, A2, A3 and A4 are as defined in claim 1. The dye mixtures according to this invention are particularly suitable for dyeing or printing natural or synthetic polyamide fiber material.

The present invention relates to novel dye mixtures, to a process for their preparation and the to use of these dye mixtures for dyeing and printing fibre materials, in particular textile fibre materials.

This invention relates to dye mixtures which comprise at least one dye of formula ##STR3## and at least one dye of formulae (2) and (3) ##STR4## wherein

R₁, R₂, R₃, R₄ and R₆ are each independently of one another hydrogen or unsubstituted or substituted C₁ -C₄ alkyl,

R₅ is hydrogen, or unsubstituted or substituted C₁ -C₆ alkyl, C₅ -C₇ cycloalkyl, or phenyl or naphthyl which are unsubstituted or substituted by C₁ -C₄ alkyl, C₁ -C₄ alkoxy, C₂ -C₄ alkanoylamino, carboxyl, sulfo, carbamoyl, ureido, halogen or by a radical of formula --SO₂ --Z, or the radical of formula --N(R₄)--R₅ is a ring which may contain further hetero atoms, wherein

Z is a group of formula --CH═CH₂ or --CH₂ --CH₂ --Y, and Y is a leaving group,

R₇ is unsubstituted or substituted C₁ -C₆ alkyl, C₂ -C₄ alkenyl, phenyl or naphthyl,

X₁ and X₂ are each independently of the other halogen, hydroxyl, C₁ -C₄ alkoxy, C₁ -C₄ alkylthio, amino; N-mono- or N,N-di-C₁ -C₄ alkylamino which may be substituted in the alkyl moiety, or C₅ -C₇ cycloalkylamino which may be substituted in the cycloalkyl ring, or phenylamino or N--C₁ -C₄ alkyl-N-phenylamino which may be substituted in the aryl moiety, morpholino or piperidin-1-yl, and

A₁, A₂, A₃ and A₄ are each independently of the other radicals of a monoazo, diazo, polyazo, metal complex azo, anthraquinone, formazan, phthalocyanine or dioxazine dye.

Suitable R₁, R₂, R₃, R₄ and R₆ defined as C₁ -C₄ alkyl are, each independently of one another, typically methyl, ethyl, propyl, isopropyl, butyl, sec-butyl, tert-butyl or isobutyl. The cited alkyl radicals may be unsubstituted or substituted by e.g. hydroxy, sulfo, sulfato, cyano or carboxyl. The corresponding unsubstituted alkyl radicals are preferred.

C₁ -C₆ Alkyl R₅ may suitably be e.g. pentyl, hexyl and, preferably, C₁ -C₄ alkyl radicals, such as methyl, ethyl, propyl, isopropyl, butyl, sec-butyl, tert-butyl or isobutyl. The cited alkyl radicals can be unsubstituted or substituted by e.g. hydroxy, sulfo, sulfato, cyano or carboxyl.

C₅ -C₇ Cycloalkyl R₅ is suitably the cyclopentyl, cycloheptyl and, preferably, the cyclohexyl radical. The cited cycloalkyl radicals can be unsubstituted or substituted by e.g. C₁ -C₄ alkyl, preferably by methyl.

R₅ defined as phenyl radical or naphthyl radical can be unsubstituted or substituted by C₁ -C₄ alkyl, such as methyl, ethyl, propyl, isopropyl, butyl, sec-butyl, tert-butyl or isobutyl, preferably methyl or ethyl; C₁ -C₄ alkoxy, such as methoxy, ethoxy, propoxy, isopropoxy, butoxy, sec-butoxy, isobutoxy or tert-butoxy, preferably methoxy or ethoxy; C₂ -C₄ alkanoylamino, such as acetylamino, propionylamino or butyrylamino, preferably acetylamino; carboxyl; sulfo; carbamoyl; ureido; halogen, such as fluoro, chloro, bromo; or by a radical of formula --SO₂ --Z.

The radical of formula --N(R₄)--R₅ defined as a ring which may contain additional hetero atoms is typically piperidin-1-yl, piperazin-1-yl and, preferably, morpholino.

Z is suitably a group of formula --CH═CH₂ or --CH₂ --CH₂ --Y, preferably of --CH₂ --CH₂ --Y.

Y is typically --Cl, --OSO₃ H, --SSO₃ H, --OCO--CH₃, --OCO--C₆ H₅ or --OPO₃ H₂, in particular a group of formula --Cl or --OSO₃ H and, preferably, a group of formula --OSO₃ H.

C₁ -C₆ Alkyl R₇ is suitably e.g. pentyl, hexyl and, preferably, C₁ -C₄ alkyl radicals, such as methyl, ethyl, propyl, isopropyl, butyl, sec-butyl, tert-butyl or isobutyl. The cited alkyl radicals can be unsubstituted or substituted by e.g. C₁ -C₄ alkoxy, typically methoxy, ethoxy, propoxy, isopropoxy, butoxy, sec-butoxy, isobutoxy or tert-butoxy, preferably methoxy or ethoxy; C₂ -C₄ alkanoyloxy, such as acetyloxy, propionyloxy or butyryloxy; C₂ -C₄ alkanoylamino, such as acetylamino, propionylamino or butyrylamino; amino; hydroxyl; halogen, such as fluoro, chloro or bromo; or carboxyl.

C₂ -C₄ Alkenyl R₇ is typically vinyl, 1-propenyl, allyl, 1-butenyl, 2-butenyl and, preferably, vinyl. The cited alkenyl radicals can be unsubstituted or substituted by e.g. C₁ -C₄ alkyl, such as methyl, ethyl, propyl, isopropyl, butyl, sec-butyl, tert-butyl or isobutyl; halogen, such as fluoro, chloro or bromo; or hydroxyl.

R₇ defined as phenyl radical or naphthyl radical can be unsubstituted or substituted by e.g. C₁ -C₄ alkyl, such as methyl, ethyl, propyl, isopropyl, butyl, sec-butyl, tert-butyl or isobutyl, preferably methyl or ethyl; C₁ -C₄ alkoxy, such as methoxy, ethoxy, propoxy, isopropoxy, butoxy, sec-butoxy, isobutoxy or tert-butoxy, preferably methoxy or ethoxy; C₂ -C₄ alkanoylamino, such as acetylamino, propionylamino or butyrylamino, preferably acetylamino; carboxyl; hydroxyl; sulfo; carbamoyl; ureido and halogen, such as fluoro, chloro or bromo.

X₁ and X₂ defined as halogen are each independently of the other typically fluoro, chloro or bromo, preferably chloro.

X₁ and X₂ defined each independently of the other as C₁ -C₄ alkoxy are typically methoxy, ethoxy, propoxy, isopropoxy, butoxy, sec-butoxy, isobutoxy or tert-butoxy, preferably methoxy or ethoxy.

X₁ and X₂ defined each independently of the other as C₁ -C₄ alkylthio are typically methylthio, ethylthio, propylthio, isopropylthio or butylthio.

X₁ and X₂ defined each independently of the other as N-mono- or N,N-di-C₁ -C₄ alkylamino are, for example, N-methylamino, N-ethylamino, N-propylamino, N,N-dimethylamino or N,N-diethylamino. The cited radicals can be unsubstituted or substituted in the alkyl moiety, typically by C₂ -C₄ alkanoylamino, such as acetylamino, propionylamino or butyrylamino, preferably acetylamino; C₁ -C₄ alkoxy, such as methoxy, ethoxy, propoxy, isopropoxy, butoxy, sec-butoxy, isobutoxy or tert-butoxy, preferably methoxy or ethoxy; hydroxyl, sulfo or carboxyl. Examples to be mentioned of radicals substituted in the alkyl moiety are N-β-hydroxyethylamino and N,N,-di-β-hydroxyethylamino.

X₁ and X₂ defined each independently of the other as C₅ -C₇ cycloalkylamino may include the unsubstituted radicals as well as those which are substituted in the cycloalkyl ring, e.g. by C₁ -C₄ alkyl, such as methyl or ethyl, preferably methyl. Preferred radicals are the corresponding cyclohexyl radicals.

X₁ and X₂ defined each independently of the other as phenylamino or N--C₁ -C₄ alkyl-N-phenylamino, preferably phenylamino, may include the unsubstituted radicals as well as those radicals which are substituted in the phenyl ring e.g. by C₁ -C₄ alkyl, such as methyl or ethyl; C₁ -C₄ alkoxy, such as methoxy, ethoxy; carboxyl; sulfo or halogen, such as fluoro, chloro or bromo.

R₁, R₂, R₃, R₄ and R₆ are preferably each independently of one another hydrogen or C₁ -C₄ -alkyl. R₁, R₂, R₃ and R₆ are particularly preferably hydrogen, methyl or ethyl, more particularly hydrogen. R₄ is particularly preferably C₁ -C₄ alkyl, more particularly methyl or ethyl and, preferably, ethyl.

R₅ is preferably unsubstituted C₁ -C₆ alkyl, unsubstituted or C₁ -C₄ alkyl-substituted C₅ -C₇ cycloalkyl, or phenyl which is unsubstituted or substituted by C₁ -C₄ alkyl, C₁ -C₄ alkoxy, C₂ -C₄ alkanoylamino, carboxyl, sulfo, carbamoyl, ureido, halogen or by a radical of formula --SO₂ --Z.

R₅ is particularly preferably phenyl which is unsubstituted or substituted by C₁ -C₄ alkyl, C₁ -C₄ alkoxy, C₂ -C₄ alkanoylamino, carboxyl, sulfo, carbamoyl, ureido, halogen or by a radical of formula --SO₂ --Z, more particularly unsubstituted or sulfo- or carboxyl-substituted phenyl.

R₇ is preferably C₁ -C₄ alkyl which is unsubstituted or substituted by C₁ -C₄ alkoxy, C₂ -C₄ -alkanoyloxy, C₂ -C₄ alkanoylamino, amino, halogen, hydroxyl or carboxyl, or C₂ -C₄ alkenyl which is unsubstituted or substituted by C₁ -C₄ alkyl, hydroxyl or halogen, or phenyl or naphthyl which are unsubstituted or substituted by C₁ -C₄ alkyl, C₁ -C₄ alkoxy, C₂ -C₄ alkanoylamino, carboxyl, hydroxyl, sulfo, carbamoyl, ureido, halogen.

R₇ is particularly preferably a radical of formula --CHX--CH₂ X or --CX═CH₂, wherein X is halogen, such as fluoro, chloro or bromo, preferably bromo.

X₁ and X₂ are each independently of the other preferably halogen, amino; N-mono- or N,N-di-C₁ -C₄ alkylamino which may be substituted in the alkyl moiety by hydroxyl, sulfo, carboxyl, C₂ -C₄ alkanoylamino or C₁ -C₄ alkoxy, or C₅ -C₇ cycloalkylamino which may be substituted in the cycloalkyl ring by C₁ -C₄ alkyl, or phenylamino or N--C₁ -C₄ alkyl-N-phenylamino which may be substituted in the phenyl ring by C₁ -C₄ alkyl, C₁ -C₄ alkoxy, carboxyl, sulfo or halogen; morpholino or piperidin-1-yl.

X₁ and X₂ are each independently of the other particularly preferably halogen; N-mono- or N,N-di-C₁ -C₄ alkylamino which may be substituted in the alkyl moiety by hydroxyl; cyclohexylamino, phenylamino, morpholino or piperidin-1-yl and, most preferably halogen.

X₁ and X₂ are each independently of the other very particularly preferably morpholino, piperidin-1-yl or halogen.

X₁ and X₂ are very particularly preferably halogen and, most preferably, chloro.

A₁, A₂, A₃ and A₄ may carry the customary substituents of organic dyes bound to their basic structure.

Typical examples of substituents in A₁, A₂, A₃ and A₄ are: alkyl groups of 1 to 4 carbon atoms, such as methyl, ethyl, propyl, isopropyl or butyl, wherein the alkyl radicals may be further substituted by e.g. hydroxyl, sulfo or sulfato; alkoxy groups of 1 to 4 carbon atoms, such as methoxy, ethoxy, propoxy, isopropoxy or butoxy, wherein the alkyl radicals may be further substituted by e.g. hydroxyl, sulfo or sulfato; phenyl which is unsubstituted or substituted by C₁ -C₄ alkyl, C₁ -C₄ alkoxy, halogen, carboxyl or sulfo; acylamino groups of 1 to 8 carbon atoms; preferably alkanoylamino groups such as acetylamino or propionylamino; the acylamino groups may be substituted in the alkyl moiety by hydroxyl or C₁ -C₄ alkoxy; benzoylamino which may be substituted in the phenyl ring by C₁ -C₄ alkyl, C₁ -C₄ alkoxy, halogen or sulfo; phenylamino which may be substituted in the phenylring by C₁ -C₄ alkyl, C₁ -C₄ alkoxy, halogen or sulfo; N,N-di-β-hydroxyethylamino; N,N-di-β-sulfatoethylamino; alkylsulfonyl of 1 to 4 carbon atoms, such as methylsulfonyl or ethylsulfonyl; trifluoromethyl; nitro; amino; cyano; halogen, such as fluoro, chloro or bromo; carbamoyl; sulfamoyl; N-mono- or N,N-dialkylsulfamoyl of 1 to 4 carbon atoms each; N-phenylsulfamoyl which is unsubstituted or substituted by C₁ -C₄ alkyl, C₁ -C₄ alkoxy, halogen, carboxyl or sulfo; ureido; hydroxyl; carboxyl; sulfomethyl or sulfo.

A₁, A₂, A₃ and A₄ defined each independently of one another as radicals of a dye are radicals of formula (4) ##STR5## wherein

(R₈)₀₋₃ is 0 to 3 identical or different substituents selected from the group consisting of C₁ -C₄ alkyl, C₁ -C₄ alkoxy; C₂ -C₄ alkanoylamino which may be substituted in the alkyl moiety by hydroxyl or C₁ -C₄ alkoxy; halogen, hydroxyl, cyano, carbamoyl, carboxyl, sulfo, amino, ureido and N-mono- or N,N-di-C₁ -C₄ alkylamino, and

K₁ is a radical of the benzene or naphthalene series or a heterocyclic radical;

or radicals of formula (5) ##STR6## wherein

(R₉)₀₋₃ and (R₁₀)₀₋₃ are each independently of the other 0 to 3 identical or different substituents selected from the group consisting of C₁ -C₄ alkyl, C₁ -C₄ alkoxy; C₂ -C₄ alkanoylamino which may be substituted in the alkyl moiety by hydroxyl or C₁ -C₄ alkoxy; halogen, hydroxyl, cyano, carbamoyl, carboxyl, sulfo, amino, ureido and N-mono- or N,N-di-C₁ -C₄ -alkylamino, and

K₂ is a radical of the benzene or naphthalene series or a heterocyclic radical;

or radicals of formula (6) ##STR7## wherein

G is a phenylene radical which is unsubstituted or substituted by C₁ -C₄ alkyl, such as methyl or ethyl; C₁ -C₄ alkoxy, such as methoxy or ethoxy; C₂ -C₄ alkanoylamino, such as acetylamino or propionylamino; halogen, such as fluoro, chloro or bromo; carboxyl; sulfo or ureido, or a cyclohexylene, phenylenmethylene or C₂ -C₆ alkylene radical, such as ethylene, propylene, butylene, pentylene or hexylene.

R₈, R₉ and R₁₀ defined as C₁ -C₄ alkyl are each independently of one another suitably e.g. methyl, ethyl, propyl, isopropyl, butyl, sec-butyl, tert-butyl or isobutyl, preferably methyl and ethyl. The other C₁ -C₄ alkyl substituents cited hereinafter have the same meanings and preferred meanings.

R₈, R₉ and R₁₀ defined as C₁ -C₄ alkoxy are each independently of one another suitably e.g. methoxy, ethoxy, propoxy, isopropoxy, butoxy, sec-butoxy, isobutoxy or tert-butoxy, preferably methoxy or ethoxy. The other C₁ -C₄ alkoxy substituents which are cited hereinafter have the same meanings and preferred meanings.

Where R₈, R₉ and R₁₀ are each independently of one another C₂ -C₄ alkanoylamino which may be substituted in the alkyl moiety by hydroxyl or C₁ -C₄ alkoxy, they are typically acetylamino, propionylamino, β-hydroxyacetylamino or β-methoxyacetylamino.

Where R₈, R₉ and R₁₀ are each independently of one another N-mono- or N,N-di-C₁ -C₄ alkylamino, they are suitably e.g. N-methylamino, N-ethylamino, N-propylamino, N,N-di-methylamino or N,N-di-ethylamino. These examples are cited as representatives of all other substituents defined as N-mono- or N,N-di-C₁ -C₄ alkylamino.

Where R₈, R₉ and R₁₀ are each independently of one another halogen, they are typically fluoro, chloro or bromo. These examples are cited as representatives of all other substituents defined as halogen.

A₁, A₂, A₃ and A₄ defined each independently of one another as radicals of a dye are particularly preferably radicals of formula (7), (8) or (9) ##STR8## wherein

(R₈)₀₋₃, (R₉)₀₋₃ and (R₁₀)₀₋₃ are 0 to 3 identical or different substituents selected from the group consisting of C₁ -C₄ alkyl, C₁ -C₄ alkoxy; C₂ -C₄ alkanoylamino which may be substituted in the alkyl moiety by hydroxyl or C₁ -C₄ alkoxy; ureido, halogen and sulfo,

(R₁₁)₀₋₃ is 0 to 3 identical or different substituents selected from the group consisting of C₁ -C₄ alkyl, C₁ -C₄ alkoxy, C₂ -C₄ alkanoylamino, halogen, carboxyl, ureido and sulfo, and

K₁ and K₂ are each independently of the other a radical of formula (10) ##STR9## wherein

R₁₂ is methyl or carboxyl,

R₁₃ is amino or hydroxyl, and

(R₁₄)₀₋₃ is 0 to 3 identical or different substituents selected from the group consisting of C₁ -C₄ alkyl, C₁ -C₄ alkoxy, C₂ -C₄ alkanoylamino, ureido, halogen, carboxyl and sulfo;

or radicals of formula (11) ##STR10## wherein

R₁₅ is hydrogen, C₁ -C₈ alkyl, or phenyl which is unsubstituted or substituted by C₁ -C₄ alkyl, C₁ -C₄ alkoxy, C₂ -C₄ alkanoylamino, ureido, halogen or sulfo,

R₁₆ is hydrogen or C₁ -C₈ alkyl, and

(R₁₇)₀₋₃ is 0 to 3 identical of different substituents selected from the group consisting of C₁ -C₄ alkyl, C₁ -C₄ alkoxy, C₂ -C₄ alkanoylamino, ureido, halogen and sulfo;

or radicals of formula (12) ##STR11## wherein

R₁₈ is hydrogen or C₁ -C₄ alkyl,

R₁₉ is hydrogen, cyano, carbamoyl or sulfomethyl, and

R₂₀ is hydrogen, C₁ -C₄ alkyl, or phenyl which is unsubstituted or substituted by C₁ -C₄ alkyl, C₁ -C₄ alkoxy, C₂ -C₄ alkanoylamino, ureido, halogen or sulfo;

or radicals of formula (13) ##STR12## wherein

(R₂₁)₀₋₃ is 0 to 3 identical or different substituents selected from the group consisting of C₁ -C₄ alkyl, C₁ -C₄ alkoxy, C₂ -C₄ alkanoylamino, ureido, halogen and sulfo, and

R₂₂ is hydrogen or unsubstituted or hydroxyl-substituted C₁ -C₄ alkyl;

or radicals of formula (14) ##STR13## wherein

(R₂₃)₀₋₃ are 0 to 3 identical or different substituents selected from the group consisting of C₁ -C₄ alkyl, C₁ -C₄ alkoxy, C₂ -C₄ alkanoylamino, ureido, halogen and sulfo, and

R₂₄ and R₂₅ are each independently of the other hydrogen, or C₁ -C₄ alkyl which is unsubstituted or substituted by cyano, hydroxyl, phenyl or C₅ -C₇ cycloalkyl, wherein the phenyl radical is unsubstituted or substituted by C₁ -C₄ alkyl, C₁ -C₄ alkoxy, C₂ -C₄ alkanoylamino, ureido, halogen or sulfo and the C₅ -C₇ cycloalkyl radical is unsubstituted or C₁ -C₄ alkyl-substituted, or phenyl which is unsubstituted or substituted by C₁ -C₄ alkyl, C₁ -C₄ alkoxy, C₂ -C₄ alkanoylamino, ureido, halogen, carboxyl, hydroxyl or sulfo;

or radicals of formula (15) ##STR14## wherein

R₂₆ is hydrogen, amino, N-mono- or N,N-di-C₁ -C₄ alkylamino, or phenylamino which may be substituted in the phenyl ring by C₁ -C₄ alkyl, C₁ -C₄ alkoxy, C₂ -C₄ alkanoylamino, ureido, halogen or sulfo, and

R₂₇ is hydrogen, C₁ -C₄ alkyl, C₁ -C₄ alkoxy, C₂ -C₄ alkanoylamino, ureido, halogen or hydroxyl.

Where R₁₁, R₁₄, R₁₇, R₂₁, R₂₃ and R₂₇ are each independently of one another C₂ -C₄ alkanoylamino, they are suitably acetylamino, propionylamino or butyrylamino, preferably acetylamino.

Suitable C₁ -C₈ alkyl R₁₅ and R₁₆ are typically pentyl, hexyl, heptyl, octyl and, preferably, C₁ -C₄ -alkyl radicals, such as methyl, ethyl, propyl, isopropyl, butyl, sec-butyl, tert-butyl or isobutyl, more preferably methyl or ethyl.

R₁₅ and R₂₀ defined each independently of the other as phenyl radical may be unsubstituted or substituted by C₁ -C₄ alkyl, typically methyl, ethyl, propyl, isopropyl, butyl, sec-butyl, tert-butyl or isobutyl, preferably methyl or ethyl; C₁ -C₄ alkoxy, such as methoxy, ethoxy, propoxy, isopropoxy, butoxy, sec-butoxy, isobutoxy or tert-butoxy, preferably methoxy or ethoxy; C₂ -C₄ alkanoylamino, such as acetylamino, propionylamino or butyrylamino, preferably acetylamino; ureido; sulfo or halogen, such as fluoro, chloro or bromo.

R₂₂ defined as C₁ -C₄ alkyl, such as methyl, ethyl or propyl, is unsubstituted or hydroxyl-substituted.

R₂₄ and R₂₅ defined each independently of the other as C₁ -C₄ alkyl, such as methyl, ethyl or propyl, is unsubstituted or substituted by cyano, hydroxyl, phenyl or C₅ -C₇ cycloalkyl, such as cyclopentyl or cyclohexyl, preferably cyclohexyl. The phenyl radical may be unsubstituted or substituted by C₁ -C₄ alkyl, such as methyl or ethyl; C₁ -C₄ alkoxy, such as methoxy or ethoxy; C₂ -C₄ alkanoylamino, such as acetylamino; ureido; sulfo or halogen, such as fluoro, chloro or bromo. The C₅ -C₇ cycloalkyl radical may be unsubstituted or substituted by C₁ -C₄ alkyl, such as methyl or ethyl, preferably methyl.

R₂₆ defined as phenylamino can be unsubstituted or substituted in the phenyl ring by C₁ -C₄ -alkyl, such as methyl or ethyl; C₁ -C₄ alkoxy, such as methoxy or ethoxy; C₂ -C₄ alkanoylamino, such as acetylamino; ureido; sulfo or halogen, such as fluoro, chloro or bromo.

A₁, A₂, A₃ and A₄ defined each independently of one another as radicals of a dye are very particularly preferably radicals of formula (16) ##STR15## or (9), wherein

(R₈)₀₋₂ is 0 to 2 identical or different substituents selected from the group consisting of C₁ -C₄ alkyl, C₁ -C₄ alkoxy, C₂ -C₄ alkanoylamino, ureido and sulfo,

(R₁₁)₀₋₃ are 0 to 3 identical or different substituents selected from the group consisting of C₁ -C₄ alkyl, C₁ -C₄ alkoxy and halogen, preferably 0 to 3 identical or different C₁ -C₄ alkyl substiuents and, more preferably, methyl, and

K₁ is a radical of formula (17) ##STR16## wherein

R₁₂ is methyl or carboxyl, preferably methyl,

R₁₃ is amino or hydroxyl, and

(R₁₄)₀₋₂ is 0 to 2 identical or different substituents selected from the group consisting of C₁ -C₄ alkyl, C₁ -C₄ alkoxy, C₂ -C₄ alkanoylamino, ureido, halogen and sulfo and, preferably, 0 to 2 identical or different halogen atoms, in particular chloro;

or radicals of formula (18) ##STR17## wherein

R₁₆ is hydrogen or C₁ -C₄ alkyl and, preferably, hydrogen, and R₂₈ is hydrogen, C₁ -C₄ alkyl, C₁ -C₄ alkoxy, C₂ -C₄ alkanoylamino or halogen and, preferably, hydrogen;

or radicals of formula (12),

wherein

R₁₈ is hydrogen or C₁ -C₄ alkyl, preferably hydrogen or methyl,

R₁₉ is hydrogen, and

R₂₀ is hydrogen, C₁ -C₄ alkyl, or phenyl which is unsubstituted or substituted by C₁ -C₄ alkyl, C₁ -C₄ alkoxy, C₂ -C₄ alkanoylamino, ureido, halogen or sulfo and, preferably, hydrogen or C₁ -C₄ alkyl;

or radicals of formula (19) ##STR18## wherein

(R₂₁)₀₋₂ is 0 to 2 identical or different substituents selected from the group consisting of C₁ -C₄ alkyl, C₁ -C₄ alkoxy, C₂ -C₄ alkanoylamino, ureido, halogen and sulfo and, preferably, 0 to 2 identical or different substituents selected from the group consisting of C₁ -C₄ alkyl and C₁ -C₄ alkoxy, and

R₂₂ is hydrogen or C₁ -C₄ alkyl;

or a radical of formula (20) ##STR19## wherein

R₂₃ is hydrogen, C₁ -C₄ alkyl, C₁ -C₄ alkoxy, C₂ -C₄ alkanoylamino or halogen and, preferably, hydrogen, C₁ -C₄ alkyl or C₁ -C₄ alkoxy,

R₂₄ is hydrogen or C₁ -C₄ alkyl;

or radicals of formulae (21) or (22) ##STR20## wherein

R₂₉ is hydrogen or hydroxyl.

A₁, A₂, A₃ and A₄ are preferably radicals of a monoazo, diazo or anthraquinone dye and these radicals have the same meanings and preferred meanings cited above.

A₁, A₂, A₃ and A₄ are preferably radicals of formula (4), (5) or (6). K₁ and K₂ are here preferably radicals of formula (10), (11), (12), (13), (14) or (15), in particular radicals of formula (12), (17), (18), (19), (20), (21) or (22). R₁, R₂, R₃, R₄, R₅, R₆, R₇, X₁ and X₂ have the meanings and preferred meanings defined above.

A₁, A₂, A₃ and A₄ are particularly preferably radicals of formula (7), (8) or (9). K₁ and K₂ are here preferably radicals of formula (10), (11), (12), (13), (14) or (15), in particular radicals of formula (12), (17), (18), (19), (20), (21) or (22). R₁, R₂, R₃, R₄, R₅, R₆, R₇, X₁ and X₂ have the meanings and preferred meanings defined above.

A₁, A₂, A₃ and A₄ are very particularly preferably radicals of formula (16) or (9). K₁ and K₂ are here preferably radicals of formula (10), (1 1), (12), (13), (14) or (15), in particular radicals of formula (12), (17), (18), (19), (20), (21) or (22). R₁, R₂, R₃, R₄, R₅, R₆, R₇, X₁ and X₂ have the meanings and preferred meanings defined above.

Preferred dye mixtures are those, wherein

R₁, R₂, R₃, R₄ and R₆ are each independently of one another hydrogen or C₁ -C₄ alkyl,

R₅ is C₁ -C₆ alkyl, unsubstituted or C₁ -C₄ alkyl-substituted C₅ -C₇ cycloalkyl, or phenyl which is unsubstituted or substituted by C₁ -C₄ alkyl, C₁ -C₄ alkoxy, C₂ -C₄ alkanoylamino, carboxyl, sulfo, carbamoyl, ureido, halogen or by a radical of formula --SO₂ --Z,

R₇ is C₁ -C₄ alkyl which is unsubstituted or substituted by halogen, hydroxyl, C₁ -C₄ alkoxy, carboxyl, C₂ -C₄ alkanoyloxy, amino or C₂ -C₄ alkanoylamino, or C₂ -C₄ alkenyl which is unsubstituted or substituted by halogen, hydroxyl or C₁ -C₄ alkyl, or phenyl or naphthyl which are unsubstituted or substituted by C₁ -C₄ alkyl, C₁ -C₄ alkoxy, C₂ -C₄ alkanoylamino, carboxyl, hydroxyl, sulfo, carbamoyl, ureido, halogen,

X₁ and X₂ are each independently of the other halogen, amino; N-mono- or N,N-di-C₁ -C₄ -alkylamino which may be substituted in the alkyl moiety by hydroxyl, sulfo, carboxyl, C₂ -C₄ -alkanoylamino or C₁ -C₄ alkoxy, or C₅ -C₇ cycloalkylamino which may be substituted in the cycloalkyl ring by C₁ -C₄ alkyl, or phenylamino or N--C₁ -C₄ alkyl-N-phenylamino which may be substituted in the phenyl ring by C₁ -C₄ alkyl, C₁ -C₄ alkoxy, carboxyl, sulfo or halogen; morpholino or piperidin-1-yl, and

A₁, A₂, A₃, A₄ and Z have the meanings and preferred meanings defined above.

Particularly preferred dye mixtures are those, wherein

R₁, R₂, R₃, R₄ and R₆ are each independently of one another hydrogen or C₁ -C₄ alkyl,

R₅ is phenyl which is unsubstituted or substituted by C₁ -C₄ alkyl, C₁ -C₄ alkoxy, C₂ -C₄ alkanoylamino, carboxyl, sulfo, carbamoyl, ureido, halogen or by a radical of formula --SO₂ --Z.

R₇ is a radical of formula --CHX--CH₂ X or --CX═CH₂, wherein X is halogen, preferably bromo,

X₁ and X₂ are each independently of the other halogen; N-mono- or N,N-di-C₁ -C₄ alkylamino which may be substituted in the alkyl moiety by hydroxyl; cyclohexylamino, phenylamino, morpholino or piperidin-1-yl, preferably halogen, and

A₁, A₂, A₃, A₄ and Z have the meanings and preferred meanings defined above.

Very particularly preferred dye mixtures are those comprising at least one dye of formula (1) and at least one dye of formula (2), wherein

R₁, R₂, R₃ and R₄ are each independently of one another hydrogen or C₁ -C₄ alkyl,

R₅ is phenyl which is unsubstituted or substituted by C₁ -C₄ alkyl, C₁ -C₄ alkoxy, C₂ -C₄ alkanoylamino, carboxyl, sulfo, carbamoyl, ureido, halogen or by a radical of formula --SO₂ --Z,

X₁ and X₂ are each independently of the other halogen; N-mono- or N,N-di-C₁ -C₄ alkylamino which may be substituted in the alkyl moiety by hydroxyl; cyclohexylamino, phenylamino, morpholino or piperidin-1-yl, preferably halogen, and

A₁, A₂, A₃ and Z have the meanings and preferred meanings defined above.

A₁, A₂ and A₃ preferably have the same meaning, and X₁ and X₂ are identical.

The dyes of formula (1) can be obtained, for example, by reacting cyanuric halide, in particular cyanuric fluoride or, preferably cyanuric chloride, with a compound of formula (24)

    A.sub.1 --NHR.sub.1,                                       (24)

a compound of formula (25)

    A.sub.2 --NHR.sub.2                                        ( 25)

and a compound of formula (26)

    X.sub.1 --H,                                               (26)

wherein A₁, A₂, X₁, R₁ and R₂ are as defined for formula (1).

The cyanuric halide is preferably first reacted with about stoichiometric amounts of a compound of formula (24) at a temperature of -5 to 20° C., preferably of 0 to 5° C., the pH being kept in the range from neutral to slightly acid, preferably from 2 to 7, by the addition of suitable bases, typically alkali metal bases such as lithium hydroxide, sodium hydroxide or potassium hydroxide, or lithium carbonate, sodium carbonate or potassium carbonate. Conveniently about stoichiometric amounts of a compound of formula (25) are added to the reaction mixture so obtained and are then reacted with the triazine derivative at slightly elevated temperature, preferably from 10 to 60° C., and at a neutral to slightly acid pH of preferably 6 to 7. If the compounds of formulae (24) and (25) are identical compounds where A₁ ═A₂ and R₁ ═R₂, then about 2 equivalents of a compound of formula (24) are reacted with 1 equivalent of cyanuric chloride or cyanuric fluoride, the temperature preferably being at first kept at -5 to 20° C., preferably at 0 to 5° C., and is then preferably raised to 10 to 60° C.

It is also possible to react cyanuric halide first with a precursor of the compound of formula (24), for example with a diazo component in the case of azo dyes, and to react it then to the corresponding dye radical A₁, for example by diazotisation and coupling. This reaction to the dye radical can be carried out e.g. preferably directly after the reaction of cyanuric halide with the precursor, or also in the further course of the synthesis of the dye of formula (1).

The triazinyl compounds obtainable by the process described above additionally contain a halogen atom which can be converted to a group X₁ by reacting it with a compound of formula (26) at elevated temperature, preferably in the range from 20 to 70° C., and at a neutral to slightly alkaline pH which, depending on the compound of formula (26), ranges from 7 to 9. The compound of formula (26) is preferably used in excess.

The dyes of formula (2) can be obtained by a procedure analogous to that used in preparing the dyes of formula (1), for example by reacting cyanuric halide, in particular cyanuric fluoride or, preferably, cyanuric chloride, with a compound of formula (27)

    A.sub.3 --NHR.sub.3,                                       (27)

a compound of formula (28)

    R.sub.5 --NHR.sub.4,                                       (28)

and a compound of formula (29)

    X.sub.2 --H,                                               (29)

wherein A₃, R₃, R₄, R₅ and X₂ are as defined for formula (2).

The dyes of formula (3) can be obtained, for example, by reacting a compound of formula (30)

    A.sub.4 --NHR.sub.6                                        ( 30)

with a compound of formula (31)

    hal--CO--R.sub.7,                                          (31)

wherein hal is halogen, preferably bromo or chloro, and A₄, R₆ and R₇ are as defined for formula (3).

The reaction with compounds of the above formula (31) can generally be carried out in dipolar aprotic solvents, typically dimethylformamide, dimethylsulfoxide or N-methylpyrrolidone, in the presence of a base, typically an alkali metal carbonate or alkali metal hydroxide, for example sodium carbonate, potassium carbonate or sodium hydroxide, at a temperature of e.g. 0 to 80° C.

The compounds used in the above processes are known or can be prepared in general analogy to known compounds.

The dye mixtures of the dyes of formulae (1), (2) and (3) can also be prepared, for example, by mixing the individual dyes. This mixing process is typically carried out in suitable mills, e.g. bead and pin mills, as well as in kneaders or mixers.

The dye mixtures can also be prepared, for example, by spray drying the aqueous dye mixtures.

The dye mixtures preferably comprise 5 to 95% by weight, in particular 10 to 90% by weight and, preferably, 20 to 80% by weight, of a dye of formula (1), based on the total amount of the dyes of formulae (1) and (2) or based on the total amount of the dyes of formulae (1) and (3). The dye mixtures particularly preferably comprise 30 to 70% by weight, more particularly 35 to 65% by weight, of a dye of formula (1), based on the total amount of the dyes of formulae (1) and (2) or based on the total amount of the dyes of formulae (1) and (3).

The dyes of formulae (1), (2) and (3) are present either in the form of their free acid or, preferably, as the salts thereof.

Suitable salts are, for example, the alkali metal, alkaline earth metal or ammonium salts or the salts of an organic amine. Typical examples are the sodium, lithium, potassium or ammonium salts or the salt of the mono-, di- or triethanolamine.

The term sulfo generally includes the free acid form (--SO₃ H) and also the salt form.

The dyes of formulae (1), (2) and (3) are anionic acid dyes. In the dyes of formulae (1), (2) and (3), the number of anionic groups, in particular the number of sulfo groups, is greater than or equal to the number of cationic groups. Preferably, the number of anionic groups is greater than the number of cationic groups. Cationic groups are to be understood as meaning those groups which carry a cationic charge under customary dyeing conditions. Examples are aliphatically bonded amino radicals. The nitrogen atoms present in the triazine ring and those bonded to the triazine radical carry no cationic charge.

The dye mixtures according to the invention are suitable, by methods known per se, for dyeing and printing, in particular, nitrogen- or hydroxyl-containing fibre materials, paper or leather, typically textile fibre materials of cellulose, silk and, in particular, wool and synthetic polyamides. It is preferred to dye or print natural or synthetic polyamide fibre materials. The novel dye mixtures can be used for dyeing and printing in the generally customary form, which may be worked up beforehand, if appropriate. Level dyeings are obtained having good allround fastness properties, in particular good fastness to rubbing, wet treatment, wet rubbing and light. The novel dye mixtures are furthermore readily water-soluble and can easily be combined with other dyes. The above-mentioned textile material can be in any form of presentation, for example in the form of fibre, yarn, woven fabric or knitted fabrics.

The following Examples illustrate the invention in more detail. Temperatures are given in degrees Celsius, parts and percentages are by weight, unless otherwise stated. Parts by weight and parts by volume have the same relationship as that of the kilogramme to the litre.

WORKING EXAMPLE 1

19.1 Parts of 1,3-phenylendiamine-4-sulfonic acid (98.6%) are dissolved in 100 parts of water and 52 parts of an aqueous 2 N sodium hydroxide solution at pH 7, and this mixture is added dropwise to a mixture consisting of 18.5 parts of cyanuric chloride, 100 parts of ice and 50 parts of water at a temperature of 5° C. over 50 minutes. During this dropwise addition, the pH is kept at 3 to 3.5. The pH is then increased to 7 by adding 50 parts of an aqueous 2 N sodium hydroxide solution over 70 minutes. After one hour, 25 parts of hydrochloric acid (37%) and 200 parts of water are added, and 25 parts of an aqueous 4 molar sodium nitrite solution are then metered in at a temperature of 5 to 15° C. over 25 minutes. After two hours, excess sodium nitrite is destroyed with sulfamic acid. Meanwhile, 22.5 parts of 2-naphthylamine-5-sulfonic acid are dissolved in 100 parts of water and 52 parts of an aqueous 2 N sodium hydroxide solution at pH 7, and this solution is then added dropwise to the reaction mixture over 30 minutes. The pH is then adjusted to 7 by adding 112 parts of an aqueous 2 N sodium hydroxide solution over 80 minutes. A solution of 12.2 parts of N-ethylaniline in 100 parts of 1 molar hydrochloric acid is then added dropwise over 15 minutes, followed by the addition of 101 parts of an aqueous 2 N sodium hydroxide solution over 50 minutes. The dark red reaction solution is charged with 500 parts of an aqueous sodium chloride solution, and the precipitated product is then filtered off, washed with 10% aqueous sodium chloride solution and dried under vacuum at 70° C., giving 52.5 parts of a compound of formula ##STR21##

WORKING EXAMPLES 2 TO 11

In general analogy to the instructions of Working Example 1, those dyes may be obtained which are listed in the following Table 1 in the form of the free acids.

                                      TABLE 1     __________________________________________________________________________     Working Example     __________________________________________________________________________             1 #STR22##                                 (102)     3             2 #STR23##                                 (103)     4             3 #STR24##                                 (104)     5             4 #STR25##                                 (105)     6             5 #STR26##                                 (106)     7             6 #STR27##                                 (107)     8             7 #STR28##                                 (108)     9             8 #STR29##                                 (109)     10             9 #STR30##                                 (110)     11             0 #STR31##                                 (111)     __________________________________________________________________________

In contradistinction to the azo dyes of formulae (101) to (110), the anthraquinone dye of formula (111) is obtained by first condensing the compound of formula (112) ##STR32## with cyanuric chloride and then reacting the resulting condensate with N-ethylaniline in general accordance with the procedure described in Working Example 1.

WORKING EXAMPLE 12

70 parts of cyanuric chloride are stirred for 30 minutes in 950 parts of ice and 200 parts of water, with the addition of 3.6 parts of disodium dihydrogen phosphate×12 H₂ O. To this mixture is added over 10 minutes a solution consisting of 116.4 parts of 4-(β-sulfatoethylsulfonyl)aniline (92%) in 900 parts of water and which is adjusted to pH 5.5. Throughout this addition, the pH is kept at 4.5 to 5 by addition of 2 N sodium hydroxide solution. Subsequently, 500 parts of acetone are added and the mixture is stirred at 0 to 5° C. until the uptake of sodium hydroxide solution is complete. The precipitate is then collected by suction filtration and washed first with water and then with acetone. The precipitate so obtained is dried at room temperature under vacuum, giving a compound which, in the form of the free acid, corresponds to formula (113). ##STR33##

20 Parts of the compound of formula (113) are suspended in 150 parts of water and then slowly added to a suspension containing 24.8 parts of the compound of formula (114) in the form of the free acid ##STR34## in 150 parts of water. The pH is adjusted to 6 and the reaction mixture is then heated to 35° C., the pH being kept at 6 by addition of 2 N sodium hydroxide solution. After 2 hours, the uptake of sodium hydroxide solution is complete. Sodium chloride (c. 20 vol. %, based on the reaction mixture) is added, and the precipitated product is then collected by suction filtration and washed with a small amount of an aqueous solution of sodium chloride. After drying at 35° C. under vacuum, a dye is obtained which, in the form of the free acid, corresponds to the compound of formula (115). ##STR35##

WORKING EXAMPLE 13

1.85 Parts of cyanuric chloride are ground in 25 parts of ice, 5 parts of water and 0.1 parts of disodium hydrogen phosphate for 30 minutes, while cooling with ice.

To prepare a second solution, 7.16 parts of the compound of formula (114) are dissolved in 160 parts of water at a temperature of 25 to 30° C. and a pH of 8.5 to 9. The resulting solution of the compound of formula (114) is added dropwise to the cyanuric chloride slurry obtained as described above. The mixture is then heated slowly to a temperature of 45 to 50° C. and the pH is increased to 9 by addition of aqueous sodium hydroxide solution. The reaction mixture is subsequently diluted with ethanol and then filtered. After washing with an ethanol/water mixture (in the ratio of 1:1), the dye is dried at a temperature of 50 to 60° C. under vacuum, giving 5.4 parts of a dye which, in the form of the free acid, corresponds to the compound of formula (116). ##STR36##

WORKING EXAMPLES 14 TO 20

In general analogy to the instructions of Working Example 13, those dyes listed in the following Table 2 in the form of the free acids may be obtained. ##STR37##

                  TABLE 2     ______________________________________     Ex-     ample A     ______________________________________     14           1                           (117)     15           2 #STR38##                  (118)     16           3 #STR39##                  (119)     17           4 #STR40##                  (120)     18           5 #STR41##                  (121)     19           6 #STR42##                  (122)     20           7 #STR43##                  (123)     ______________________________________

In contradistinction to the azo dyes of formulae (116) to (122), the anthraquinone dye of formula (123) is obtained by condensing the compound of formula (112) with cyanuric chloride, in general accordance with the procedure described in Working Example 13.

The dye of formula (124) ##STR44## may be obtained by reacting e.g. 2,3-dibromopropionylchloride in known manner with the dye of formula (114) in the presence of a base.

EXAMPLES OF DYE MIXTURES

By mixing in a mixer, 100 parts each of the dye mixtures of the following Table 3 are prepared, which dye wool and synthetic polyamide fibre materials in the indicated shades.

                  TABLE 3     ______________________________________                                     Shade     Ex. Dye mixture                 on wool     ______________________________________     21  mixture of         65 parts of the dye according to Working Example 4                                     red         35 parts of the dye according to Example 13     22  mixture of         50 parts of the dye according to Working Example 4                                     red         50 parts of the dye according to Example 13     23  mixture of         50 parts of the dye according to Working Example 8                                     yellow         50 parts of the dye according to Example 19     24  mixture of         50 parts of the dye according to Working Example 6                                     orange         50 parts of the dye according to Example 17     25  mixture of         50 parts of the dye according to Working Example 5                                     red         50 parts of the dye according to Example 16     26  mixture of         50 parts of the dye according to Working Example 3                                     yellow         50 parts of the dye according to Example 15     27  mixture of         50 parts of the dye according to Working Example 2                                     yellow         50 parts of the dye according to Example 14     28  mixture of         50 parts of the dye according to Working Example 11                                     blue         50 parts of the dye according to Example 20     29  mixture of         50 parts of the dye according to Working Example 9                                     red         50 parts of the dye according to Example 13     30  mixture of         50 parts of the dye according to Working Example 10                                     red         50 parts of the dye according to Example 13     31  mixture of         50 parts of the dye according to Working Example 7                                     orange         50 parts of the dye according to Example 18     32  mixture of         50 parts of the dye of formula (124)                                     red         50 parts of the dye according to Example 13     33  mixture of         65 parts of the dye of formula (124)                                     red         35 parts of the dye according to Example 13     34  mixture of         50 parts of the dye according to Working Example 12                                     red         50 parts of the dye according to Example 13     ______________________________________

EXAMPLES OF DYEINGS Example 35

10 Parts of polyamide 6.6 fibre material (Helanca tricot) are dyed in 500 parts of an aqueous liquor which comprises 2 g/l of ammonium acetate and which is adjusted to pH 5 with acetic acid. The content of the dye mixture of Example 22 is 0.8%, based on the fibre weight. The dyeing time at a temperature of 98° C. is 30 to 90 minutes. The dyed fibre material is then removed from the liquor and washed and dried in the customary manner, giving a piece of fabric which has been dyed red and having good overall fastness properties.

Example 36

10 Parts of woolen knitting yarn are stirred at 30° C. into a dye bath which comprises 0.8 parts of the dye of Example 21, 0.5 parts of sodium sulfate and 2 parts of sodium acetate, per 100 parts of water, and which is adjusted to pH 4.5 with acetic acid (80%). The liquor is brought to the boiling point over 45 minutes and is kept there for a further 45 to 70 minutes. The dyed goods are then removed, rinsed thoroughly with cold water and dried, giving a red dyeing on wool which has good fastness properties.

Example 37

100 Parts of clothing suede leather are milled at 50° C. in a solution of 1000 parts of water and 2 parts of 24% ammonia for 2 hours and then dyed for one hour at 60° C. in a solution of 1000 parts of water, 2 parts of 24% ammonia and 2 parts of a dye mixture of Example 21. Thereafter, a solution of 40 parts of water and 4 parts of 85% formic acid is added and dyeing is carried out for a further 30 minutes. The leathers are then rinsed thouroughly and, if appropriate, further treated with 2 parts of a dicyandiamide/formaldehyde condensate at 50° C. for 30 minutes, giving a red dyeing having good overall fastness properties. 

What is claimed is:
 1. A dye mixture comprising at least one anionic acid dye of formula (1) ##STR45## and at least one anionic acid dye of formula (2) ##STR46## wherein R₁, R₂, R₃ and R₄ are each independently of one another hydrogen or C₁ -C₄ alkyl,R₅ is phenyl which is unsubstituted or substituted by C₁ -C₄ alkyl, C₁ -C₄ alkoxy, C₂ -C₄ alkanoylamino, carboxyl, sulfo, carbamoyl, ureido, halogen or by a radical of formula --SO₂ --Z, or the radical of formula --N(R₄)--R₅ is a ring which may contain further hetero atoms, wherein Z is a group of formula --CH═CH₂ or --CH₂ --CH₂ --Y, and Y is a leaving group, X₁ and X₂ are identical and are halogen; N-mono- or N,N-di-C₁ -C₄ alkylamino which may be substituted in the alkyl moiety by hydroxyl; cyclohexylamino, phenylamino, morpholino or piperidin-1-yl, and A₁, A₂ and A₃ have the same meaning and are radicals of formula (16) ##STR47## wherein (R₈)₀₋₂ is 0 to 2 identical or different substituents selected from the group consisting of C₁ -C₄ alkyl, C₁ -C₄ alkoxy, C₂ C₄ alkanoylamino, ureido and sulfo, (R₁₁)₀₋₃ are 0 to 3 identical or different substituents selected from the group consisting of C₁ -C₄ alkyl, C₁ -C₄ alkoxy and halogen, and K₁ is a radical of formula (17) ##STR48## wherein R₁₂ is methyl or carboxyl, R₁₃ is amino or hydroxyl, and (R₁₄)₀₋₂ is 0 to 2 identical or different substituents selected from the group consisting of C₁ -C₄ alkyl, C₁ -C₄ alkoxy, C₂ -C₄ alkanoylamino, ureido, halogen and sulfo; or a radical of formula (18) ##STR49## wherein R₁₆ is hydrogen or C₁ -C₄ alkyl, and R₂₈ is hydrogen, C₁ -C₄ alkyl, C₁ -C₄ alkoxy, C₂ -C₄ alkanoylamino or halogen; or a radical of formula (12), ##STR50## wherein R₁₈ is hydrogen or C₁ -C₄ alkyl, R₁₉ is hydrogen, and R₂₀ is hydrogen, C₁ -C₄ alkyl, or phenyl which is unsubstituted or substituted by C₁ -C₄ alkyl, C₁ -C₄ alkoxy, C₂ -C₄ alkanoylamino, ureido, halogen or sulfo; or a radical of formula (19) ##STR51## wherein (R₂₁)₀₋₂ is 0 to 2 identical or different substituents selected from the group consisting of C₁ -C₄ alkyl, C₁ -C₄ alkoxy, C₂ -C₄ alkanoylamino, ureido, halogen and sulfo, and R₂₂ is hydrogen or C₁ -C₄ alkyl; or a radical of formula (20) ##STR52## wherein R₂₃ is hydrogen, C₁ -C₄ alkyl, C₁ -C₄ alkoxy, C₂ -C₄ alkanoylamino or halogen, and R₂₄ is hydrogen or C₁ -C₄ alkyl; or radicals of formulae (21) or (22) ##STR53## wherein R₂₉ is hydrogen or hydroxyl.
 2. A process for dyeing or printing hydroxyl group-containing or nitrogen-containing fibre material, which process comprises applying to said fibre material a tinctorial amount of a dye mixture according to claim
 1. 3. A dye mixture according to claim 1, wherein Y is a group of formula --OSO₃ H.
 4. A process according to claim 2, wherein said fibre material is natural or synthetic polyamide fibre material.
 5. A dye mixture according to claim 1, wherein R₅ is phenyl which is unsubstituted or substituted by C₁ -C₄ alkyl, C₁ -C₄ alkoxy, C₂ -C₄ alkanoylamino, carboxyl, sulfo, carbamoyl, ureido, halogen or by a radical of formula --SO₂ --Z.
 6. A dye mixture according to claim 1, wherein R₅ is phenyl which is unsubstituted or substituted by sulfo or carboxyl.
 7. A dye mixture according to claim 1, wherein X₁ and X₂ are chloro. 